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(No Model.) q 2 Sheets-S heet 1.

L. PPINGST & S. A. BEMISI TRUCK FOR RAILWAY CARS.

No. 449,382.. Patented Mar. 31,1891..

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2 SheetsSheet 2. L'. PPINGST & S. A. BEMIS.

TRUCK FOR RAILWAY CARS (No Model.)

Patented Mar. 31, 1891. m

WEZZSSQ'S my 16. r n? I f N %M/ 6 7 UNITED STATES PATENT EEIC LOUIS PFINGST, OF BOSTON, AND SUMNER A. BFMIS, OF SPRINGFIELD,

' MASSACHUSETTS.

TRUCK FOR RAILWAY-CARS.

SPECIFICATION forming part of Letters Patent No. 449,382, dated March 31, 1891.

Application filed December 17, 1890- Serial No. 375.042. (No model.)

To (tZZ whom it 71161; concern/.-

Be it known that we, LOUIS PFINGST and SUMNER A. BEMIs, citizens of the United States of America, residing at Boston and Springfield, respectively, in the counties of Suffolk and I'Iampden and State of Massachusetts, have invented new and useful Improvements in Trucks for Railway Cars, of which the following is a specification.

This invention relates to trucks for railwaycars, the same being especially designed for street-railway, electric, or cable cars; and the object of the invention is to improve the construction of the truck whereby the truck is of unusual efficiency.

The invention consists in the construction and combination of parts, all substantially as will hereinafter more fully appear and be set forth in the claims.

Reference is to be"11ad to the accompanying drawings, in which the invention is illustrated.

Figure 1 is a plan view of one side half of the truck, while Fig. 2-is an elevation of same. Fig. 3 is a perspective view of the sill-plate for the car. Fig. 4; is a perspective view of one of the yokes of the truck-frame. Fig. 5 is a perspective view of the axle-box; and Fig. 0 is a central longitudinal vertical section and partial elevation of a portion of the truck, the relations with said truck portions of thejournal-box being indicated in dotted lines.

In the drawings, A represents the yoke or truck frame, the same comprising at each side of the truck a longitudinally-ranging yoke-beam, each consisting of a pair of yokes ctaand the intermediate and uniting-beam b, which beam, as here shown, consists of the paired bars which by their ends are bolted to the extensions a of the side pair of yokes which are toward and nearest to each other. B represents the j ournal-box. which is of a construction common in trucks already con: structed by us, the same being provided with the forwardly and rearwardly extended steps 0 c, socketcd in their upper sides, and also ver tically apertured, as at cl. The yoke is of peculiar construction, being designed to have certain portions thereof cushionsupported from the axle-box steps, and also to serve as a hood or inclosure for the FLXl6-bOX, and as particularly shown in Figs. l and 6, the whole is integrally formed or cast with the extensions a and a". The yoke is provided with an aperture 6, transversely thereof and extending from a short distance below the top thereof to the bottom, and is provided be tween the opposing cheek-pieces 2 2 in pairs, forward and to the rearof said aperture, with the horizontal rests f f, which are cast as webs,

transversely uniting the pairs of cheek-pieces forward and to the rear of said aperture e, and in the setting up of the truck the said rests f are supported a short distance above the journal-box steps 0 c by the cushions or springs g g. The cheek-pieces 2 2 are upwardly continued above the said aperture 6, and merged together, or the one into the other, as at 7t, in the form of a dome or hood overlying and inclosing the axle-box proper, the steps of said axle-box being inclosed within the lower portions of the said cheek-pieces 2 2 2 2. It is also preferred to interpose a spring or cushioni between the top or roof of the yoke and the top of the axle-box proper, as most clearly shown in Fig. 6, and in this connection it will be seen that there is a supple mental cross-webj below the top of the domeshaped yoke, suitably re-enforced for thenecessary strength to withstand the resistance offered thereagainstprimarily from the top of the box.

It will be seen, noting Figs. l and G, that the yoke is cored out internally between the rests f and the top of the yoke, as well as below the said rests, which latter coring-out or open construction is necessary for the accommodation of the steps 0 of the axle-box, while the hollow construction at the top of the yoke is for avoiding unnecessary weight, it being entirely practicable to provide under the design and construction illustrated a yoke which is practically a shell, and yet is sufficiently rigid and strong. The pending portions 8 8 of the pairs of cheelepieces, which are forward and to the rear of the separatingaperture 6, are united by the tie-braces q.

0 represents the sill-plate, which is provided on the under side of the sill of the carbody above each axle-box of the truck, and comprises a main bearing-plate 7c, adapted by bolts 3 3 to be secured to the sill, and is pro vided with sockets 7 7, formed as depressions within its under side for receiving the extremities of the bolt-rods Z and the nuts m, which are employed for effecting an engagement between the sill-plate and the tie-beam D, to be hereinafter more particularly mentioned, the engagement of said bolt-rods with the sill-plate in no manner necessitatingboring or in any manner rccessing and consequently weakening the car-sill, itbeingnoted that the extremities of the said bolt-rods Z and the confining-nuts therefor are sunk within the top surface of the sill-plate. The said sill-plate outside of said bolt-rod connections-that is, toward the ends of the sillplate from said connections -is provided with a pair of downwardly-extended bosses socketed from their under sides, as at n, and it will be noticed that the yoke-extensions a and a directly under said sockets n, are of cup or socketed form, as at n n, the springs being interposed between the sill-plate and yoke, said springs resting by their extremities in the said upper and lower sockets n and n. The said bolt-rods Z Z pass through apertures 5 in the top of the domed or hooded yoke, through the apertures (i 6 in the rests ff of the yoke, through the apertures (Z (Z of the journal-box steps to and below the under side of said steps for a suitable distance, the cushions g 9 being also perforated to permit the passage through them of the said bolt-rod and, particularly noting Fig. 2 as well as Fig. 6, itwill be seen that thetie-beam D is bolt-ed to'and suspended upon the lower ends of the said bolt-rods Z Z, serving also as braces to tie the said pairs of the bolt-rods adjacent each ,iournal-box together, and to maintain them in parallelism and materially strengthening or stiffening the structure. It is also deemed desirable to providetrusses or braces 17 pbetween the said tie-beam D and the carbody, and the compound beam connected yokes at each side of the truck are united to form the yoke or truck-frame by suitable transverse ties, beams, or girders-such, for instance as those provided at the ends of the truckat E E and those intermediately applied, as indicated at F, the latter serving, when the truck is to be used for an electric car, as a partial support for the motor.

It will be noticed that the sill-plates and sills with the bolt-rodsZ ZZ Z and the tie-beam D, which is preferably trussed, as aforesaid, form a rigid frame, which is as a part of the car-body, and which is independently and vertically movable relative to the truck-frame, which latter is in turn cushion-supported from the axle-boxes or steps thereof, and the car-body with the frame constituted by the bolt-rods and tie-beams are spring-supported, and may have the usual and comparatively considerable bounding motion from the yokeframe and upon the supporting-frames 0 0 0 0.- All lateral, longitudinal, or tilting motions of the truck or yoke frame with relation to the journal-boxes are prevented by the peculiar cngagemeutof the said bolt-rods, Y

and the tilting motion which the yokes of the truck-frame might have, resulting in a bind between the apertures in the yokes and the bolt-rods, is-=materially lessened, due to the close arrangement which the said bolt-rods Z have to the centers of the journal boxes, which centers might serve as the centers of tilting motion for the yokes.

The guards J are pivotally mounted on the brackets If pending from the yoke-extensions (Z2, whereby they may be swung up from their usual proximity to the trackwa-y through means of the chains u or other connections properly continued and actuated.

The transverse uniting members of the truck-frame E, as shown in the present drawings, consist of the angle-irons, which are bolted to and extend transversely between the hangers t, which are at opposite sides of the truck-frame.

Having fully described our invention, what we claim, and desire to sccu re by Letters Patent, is

1. The combination, in a truck, with the axle-boxes provided with the steps, of a yoke, cushion-supported from the axle-box and provided with extensions, springs which are applied longitudinallybeyond said cushion-supports and between the yoke-extensions and the body of the car, and vertical posts or boltrods extended from the car-body downwardly and having an engagement, as described, with the said yoke and axle-box steps, for the purpose set forth.

2. The combination, with axle-boxes at one side of the truck, of united yokes supported thereon, the car-bodyv spring-supported from said yokes and provided with posts orboltrods having an engagement, as described, whereby there is only a vertical motion of said rods relative to said yoke, and the tiebeam D, uniting the posts and pairs thereof, substantially as described.

3. The combination, with the axle-box provided with the steps 0 c vertically apertnred, and the yoke-cushion supported from the said journal-box steps and vertically apertu red, as described, of the car-body having the sillplate 0, provided with the sockets 7 7, let in from the upper side thereof, and having toward the ends of said plate from said sockets the socketed bosses n a, the bolt-rods Z Z, by their extremities entered and engaged in said sill-plate sockets 7 7, as described, and passed downwardly through the apertured yoke and axle-box steps, and the springs forwardly and rearwardly of said bolt-rods and between the yoke-extensions and said socketed bosses at 12, substantially as described.

at. In a truck, the combination, with the axle-box, of a yoke saddled thereon and pro vided wlth pairs of cheek-pieces forward of and at the rear of the axle-box, and tie-braces q q, uniting side pairs of said cheek-pieces, substantially as described.

5. A yoke consisting of side pairs of check- IIO pieces, each side pair separated by the aperture c, said cheelcpieces merging into a hood or dome-shaped top for the yoke, horizontal supports or rests transversely uniting side pairs of said cheek-pieces and forward and rearward extensions a and a 6. In a truck, the combination, with an axle-box having steps a c, of a yoke consisting of side pairs of cheek-pieces, each side pair separated by the aperture'e, within which the axle-box proper is disposed, and between the lower portions of which cheek-pieces the axlebox steps are disposed, and the said check pieces merging into a hood for the top of the yoke for covering the axle-box, and the horizontal supports or rests ffabove the axle-box steps, substantially as described.

7. In a truck, the combination, with an axlebox having steps 0 c, of a yoke consisting of side pairs of cheek-pieces, each side pair separated by the aperture c, within which the axlebox proper is disposed and between the lower portions of which cheek-pieces the axle-box steps are disposed, and the said cheek-pieces merging into a hood for the top of the yoke for covering the axle-box and the horizontal supports or rests ff above the axle-box steps and the cushions g 9 between the said steps and said rests, substantially as described.

8. A yoke consisting of side pairs of cheekpieces, each side pair separated by the aperture e, the said cheek-pieces merging into a hood for the top of the yoke, the transverse web j and the rests ff transversely uniting side pairs of said yokes, combined with the axle-box having the steps 0 c, and the cushion: 2 and g g, substantially as described.

9. A yoke consisting of side pairs of cheekpieces, each side pair separated by the aperture e, the said cheek-pieces merging into the hood or dome-shaped top for the yoke, the transverse rests f f, and the forward and rearwardly extended extensions Ct a all integrally cast, substantially as described.

10. In a truck, the combination, with the pair of axle-b0xes at each side of the truck, each having the steps 1: 0, provided with the sockets d, yokes saddled on each journal-box, each consisting of side pairs of cheek-pieces separated by the aperture through which the journal-box proper passes, said cheek-pieces merging into a hood forming the top of the yoke for covering the axle-box, and the horizontal supports or rests above said steps 0 and the forward and rearward extensions a a and a beam connecting side pairs of said yokes, and the cushions g g, of the car-body provided with the sill-plate, and the bolt-rods Z Z engaged therewith and extended downwardly through apertures in the top of the yoke and in said rests ff and said steps, the springs o 0, forward and to the rear of said bolt-rods and supporting the car-body from said yoke-extensions, and the tie-beams D D uniting the bolt-rods of each pair and also uniting side pairs of said bolt-rods, all substantially as described, for the purposes set forth.

11. The combination, with a car-body provided with the pending bolt-rods Z Z, of the axle-boxes and the yoke-frame supported thereon, and through which yoke the said bolt-rods pass, as described, the supportingsprings 0 0 between the yoke-frame and the car-body, the tie-bean1s D uniting the boltrods, as described,and the brace or truss rods 19 1) connected between said tie-beams and the car-body.

12. In a truck, the combination, with a suitable frame thereof, of a guard transversely applied and pivotally connected on said truckframe, and having a chain or other flexible connection secured thereto, whereby through said chain said transverse guard may be swung at will into and out of proximity to the trackway, substantially as described.

LOUIS PFINGST.

SUMNER A. BEMIS. Witnesses to Louis Pfingst:

O. M. SHAW, KATHARINE DURFEE. \Vitnesses to Sumner A. Bemis:

G. M. CHAMBERLAIN, Ii. A. CHAPIN. 

